Forge



J. A. MUELLER.

FORGE.

APPLICATION FILED MAY 29. 1919. w 1 ,405,146. Patented Jan. 31, 1922.

X Z r M (7'11 1/ a'onn a. MUELLER, or emrrounann, nassacnusnrcrs.

FORGE.

mosaic.

Specification of Letters Patent.

Patented Jan; 31,1922.

Application filed May 29, 1919. Serial No. 800,525.

To all whomz't may concern:

Be it known that 1, JOHN A.-MUELLER, a citizen of the United States, and resident of Cliftondale, in the "county of Essex and State of Massachusetts, have invented a new and useful Forge, of which the following'is a specification.

One object of my invention is to'provide a device having an etlicient heating chamber combined with a conveniently located open ing to be used not only for insertion, but also for removal, of the material, my device being especially useful for heating rivets, although other material may be advantageously heated.

A feature of my invention consists in providing means to deflect the blast into operative relation with the material to be acted uponcombined with an opening over the blast suitable not only for insertion but for removal of the material, the fuel whirling about in the chamber and some being again deflected downwardly by the entering blast so that the space just above said opening is comparatively cool and accessible to the operator. In the preferred form a portion of the flame passes from the burner directly outside of the receptacle with the result that when the flame has acted upon thematerial and moves upwardly it is directed efliciently toward the deflector and no flame ever rises above that portion which has the direct passage abovereferred to and consequently the atmosphere immediately above the flame is so cool that the operators hands may approach very closely to the flame Without danger with one important resulting advantage that the-top opening of the receptacle may be used not only to insert the rivets .or other material but to remove them when heated, it being perfectly practical, as my experiments have shown, for the operator to use twelveinch tongs for manipulating the material in a chamber five inches deep.

Another feature of my invention is cooperating walls on the nozzle and cap for purposes described below.

Another feature'is the provision of guards to protect the nozzle and still permit access thereto as desired.

Gther feature s will be pointed out below. in the drawing- Figure 1 is an elevation, partly in section on line 2-2 of Figure 2, of a forge embodying my invention;

' Figure 2 is a plan of said forge; and

Figure 3 is an enlarged detail of the nozzle and cap. 4 Any suitable frame A supports the fuel tank B and also supports the receptacle D for the rivets (6 cl or other material. The receptacle is preferably-made of firebricks and in one wall'is set a firebrick D extending at the angle shown inwardly and also extending slightly. above the top of the receptacle. The brick D may be conveniently held in place by fire clay E or in any other suitable Way. One wall d of the receptacle has a tapered opening I) registering with a tapered opening f in the casting F, the lat-. ter being suitably connected to the receptacle, which is open atthe top from said brick D to the wall d; 3

The nozzle G is supported by the brackets g and pivoted to cross-arm G and car ries the usual member 9 for adjusting the air wihch enters at g and passes along pas; sage 9 The nozzle is exte'riorly threaded at g and has annular external wall 9 and reduced extension g. The cap His interiorly air and to make a tight vacuum so that a small quantity of oil will be consumed when a small non-sputtering flame is desirable but also to hold the cap steady on' the nozzle. The annular wall 71, of the cap is slightly removed from the outer surface of the extension gf so as to provide for suction of the liquid fuel which passes from tank B through pipe 6 and passage 6', which fuel 'may be any suitable fuel such as fuel oil or kerosene. For the adjustment shown I prefor to have the shoulder h engage the body of the nozzle as shown'so as to provide more -efiicient suction for that particular feed of fuel but of course the cap may'beunscrewed toward. the receptacle in which case there will be more suction and therefore a richer mixture. f J At each side 0f the nozzle 1 provide guards, each consisting of two horizontal armsM M suitably connected to the body of the forge, said horizontal arms beilpdg connected by integral vertiw l portions H j so that accidental interference with the nozzle is prevented but desired access to the nozzle at the rear thereof may be had.

My device is preferably portable'and I therefore provide pivoted yoke handles N and N which hang downwardly when the device is in use although they are shown in 'the drawing in their upward position.

I provide a pan P suitably supported by the frame for the purpose of keeping heat away from the fuel tank.

The operation of my device will be clear from the above but I desire to again call attention to the 6 eat advantage, particularly in a portable iorge, of having the parts so correlated that the opening for manipulation is in the most convenient place, that is, at the top, and at the same time the flame is so guided and directed that the atmosphere immediately above. the flame is cool enough so as not to endanger the operators hands. the deflecting means, being the brick D in the form shown, having its acting face so inclined as to deflect the flame downwardly but in the preferred form being so located as to permit a comparatively small portion of the flame to pass directly from the burner outside of the chamber without downward deflection in order to cause a kind of suction to carry away the waste gases so that close manipulation will not be interfered with, it being understood that a gas, or other suitable burner could be used in place of a liquid-fuel burner.

It will be understood that the face (Z of the brick D really forms a part of the wall of the chamber and acts as means to guide the flame downwardly, the face 01 acting, in the form shown, to give a slight upward deflection to the uppermost portion of the flame.

What I claim is:

1. A device of the character described comprising a heating chamber having an opening at the top to permit manipulation of the material and means to guide the dame across said opening and then downwardly to the material to be acted on in said chamber.

2. A device of the character described comprising a heating chamber having an opening at the top to permit insertion and removal of the material; means to guide the flame downwardly to the material to be acted on in said chamber; and means to dithe flame downwardly to the material to be acted. on in said chamber; and means to di" rect the flame so as to deflect the waste gases away from said opening as they rise from the chamber.

I 4. A device of the character described comprising a heating chamber having an opening at the top to permit insertion and removal of the material; means forming a part of the wall of said chamber to guide the flame downwardly to the material; and means to direct a portion of the flame to said guiding means and to direct another portion above said guiding means through said opening.

5; A device of the character described comprisin a nozzle and guarding means which pro ect the nozzle at the s1des thereof but permit desired access to the rear thereof.

6. A devicegof. the character described comprisingnozzle; two guards one at each side of the nozzle and extending rearwardly farther than the nozzle and each comprising two horizontal arms, one higher ahd then other lower than the nozzle, said arms being connected by a vertical arm.

7. A device of the character described comprising a heatin chamber having an opening for manipulation of the material andmeans which guide the flame to said chamber and which control. the escape of heat through said opening so as to confine such escape to a desired portion of said ;opening.

8. A device of the character described comprising a. heating chamber having an opening at the top for manipulation of the material; a blast to convey fuel to act on said material; aiid means to direct the blast across and directly beneath said opening and then downwardly to the material to be acted on in Saidchamber.

9. A device of the character described comprising a heating chamber havingan opening at the top for manipulation of the material; and means to provide a directblast across and directly beneath said opening, said blast conveying fuel to act on said material.

10. A device of the character described comprising a heating chamber having an opening at the top for manipulation of the material and for the'venting of spent gases,

said chamber being formed at the bottom to receive and hold the material while it is being acted upon; a blast to convey fuel to act on said material, means to ,direct the blast clear across and immcdiatelyflbeneath said opening and above the material; and means to direct the blast downwardly to the material to be treated after the blast has been directed across said opening.

11. A device of the character described comprising a heating chamber having an opening at the top for manipulation of the material and for the venting of spent gases,

said chamber being formed at the bottom to receive and A old the material while it is being acted upon and also formed with adeflectmg wall; and means to direct a blast fleeting Wall directing the blast downwardly a to the material to be treated after the biasihas been directed across said opening.-

JOHN A. MUE LER. 

